The Bahco 466-M Series magnetic levels have a unique design on the radius end caps fastening pins & convex radius & have eight rare earth magnetic two vertical (plumb) vials & one horizontal vial. (only 1 vertical vial on 400 mm.) with & accuracy of 0.5 mm. The 1.7 mm. thick construction will not twist & these levels have a V groove at the bottom making these levels suitable for use with pipes. Machined surface on top & bottom. Anti-shock rubber end caps. Laser edged centre zero measuring scale along the edge. Anodised finish. 2 hand holes. (only 1 on 400 mm.).